1 files changed, 53 insertions, 14 deletions

diff --git a/drivers/scsi/scsi_sysfs.c b/drivers/scsi/scsi_sysfs.c
index 392d8db33905..429c9b73e3e4 100644
--- a/drivers/scsi/scsi_sysfs.c
+++ b/drivers/scsi/scsi_sysfs.c
@@ -7,6 +7,7 @@
  */
 
 #include <linux/module.h>
+#include <linux/slab.h>
 #include <linux/init.h>
 #include <linux/blkdev.h>
 #include <linux/device.h>
@@ -766,10 +767,13 @@ sdev_store_queue_depth_rw(struct device *dev, struct device_attribute *attr,
         if (depth < 1)
                 return -EINVAL;
 
-        retval = sht->change_queue_depth(sdev, depth);
+        retval = sht->change_queue_depth(sdev, depth,
+                                         SCSI_QDEPTH_DEFAULT);
         if (retval < 0)
                 return retval;
 
+        sdev->max_queue_depth = sdev->queue_depth;
+
         return count;
 }
 
@@ -778,6 +782,37 @@ static struct device_attribute sdev_attr_queue_depth_rw =
                sdev_store_queue_depth_rw);
 
 static ssize_t
+sdev_show_queue_ramp_up_period(struct device *dev,
+                               struct device_attribute *attr,
+                               char *buf)
+{
+        struct scsi_device *sdev;
+        sdev = to_scsi_device(dev);
+        return snprintf(buf, 20, "%u\n",
+                        jiffies_to_msecs(sdev->queue_ramp_up_period));
+}
+
+static ssize_t
+sdev_store_queue_ramp_up_period(struct device *dev,
+                                struct device_attribute *attr,
+                                const char *buf, size_t count)
+{
+        struct scsi_device *sdev = to_scsi_device(dev);
+        unsigned long period;
+
+        if (strict_strtoul(buf, 10, &period))
+                return -EINVAL;
+
+        sdev->queue_ramp_up_period = msecs_to_jiffies(period);
+        return period;
+}
+
+static struct device_attribute sdev_attr_queue_ramp_up_period =
+        __ATTR(queue_ramp_up_period, S_IRUGO | S_IWUSR,
+               sdev_show_queue_ramp_up_period,
+               sdev_store_queue_ramp_up_period);
+
+static ssize_t
 sdev_store_queue_type_rw(struct device *dev, struct device_attribute *attr,
                          const char *buf, size_t count)
 {
@@ -813,6 +848,8 @@ static int scsi_target_add(struct scsi_target *starget)
         if (starget->state != STARGET_CREATED)
                 return 0;
 
+        device_enable_async_suspend(&starget->dev);
+
         error = device_add(&starget->dev);
         if (error) {
                 dev_err(&starget->dev, "target device_add failed, error %d\n", error);
@@ -844,7 +881,8 @@ int scsi_sysfs_add_sdev(struct scsi_device *sdev)
         struct request_queue *rq = sdev->request_queue;
         struct scsi_target *starget = sdev->sdev_target;
 
-        if ((error = scsi_device_set_state(sdev, SDEV_RUNNING)) != 0)
+        error = scsi_device_set_state(sdev, SDEV_RUNNING);
+        if (error)
                 return error;
 
         error = scsi_target_add(starget);
@@ -852,34 +890,40 @@ int scsi_sysfs_add_sdev(struct scsi_device *sdev)
                 return error;
 
         transport_configure_device(&starget->dev);
+        device_enable_async_suspend(&sdev->sdev_gendev);
         error = device_add(&sdev->sdev_gendev);
         if (error) {
                 printk(KERN_INFO "error 1\n");
-                goto out_remove;
+                return error;
         }
+        device_enable_async_suspend(&sdev->sdev_dev);
         error = device_add(&sdev->sdev_dev);
         if (error) {
                 printk(KERN_INFO "error 2\n");
                 device_del(&sdev->sdev_gendev);
-                goto out_remove;
+                return error;
         }
         transport_add_device(&sdev->sdev_gendev);
         sdev->is_visible = 1;
 
         /* create queue files, which may be writable, depending on the host */
-        if (sdev->host->hostt->change_queue_depth)
-                error = device_create_file(&sdev->sdev_gendev, &sdev_attr_queue_depth_rw);
+        if (sdev->host->hostt->change_queue_depth) {
+                error = device_create_file(&sdev->sdev_gendev,
+                                           &sdev_attr_queue_depth_rw);
+                error = device_create_file(&sdev->sdev_gendev,
+                                           &sdev_attr_queue_ramp_up_period);
+        }
         else
                 error = device_create_file(&sdev->sdev_gendev, &dev_attr_queue_depth);
         if (error)
-                goto out_remove;
+                return error;
 
         if (sdev->host->hostt->change_queue_type)
                 error = device_create_file(&sdev->sdev_gendev, &sdev_attr_queue_type_rw);
         else
                 error = device_create_file(&sdev->sdev_gendev, &dev_attr_queue_type);
         if (error)
-                goto out_remove;
+                return error;
 
         error = bsg_register_queue(rq, &sdev->sdev_gendev, NULL, NULL);
 
@@ -895,16 +939,11 @@ int scsi_sysfs_add_sdev(struct scsi_device *sdev)
                         error = device_create_file(&sdev->sdev_gendev,
                                         sdev->host->hostt->sdev_attrs[i]);
                         if (error)
-                                goto out_remove;
+                                return error;
                 }
         }
 
-        return 0;
-
- out_remove:
-        __scsi_remove_device(sdev);
         return error;
-
 }
 
 void __scsi_remove_device(struct scsi_device *sdev)